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After the first few rides, this derailleur continues to shift crisply without fail. My old derailleur had seen its day years ago, so this is a huge improvement. To get this piece of equipment, which was better than my original Shimano Deore when new, at this price was an excellent value and upgrade to the old equipment.This isn't the latest piece of equipment, and I don't have a lot to compare to, but this provides excellent value and meets my needs as a weekend warrior.

use this LX on 2 rebuilt mountain to commuter bikes year round in north. will survive 90 to sub zero temps! no plastic in stressed areas. both units wrangle 11/34 cassettes. my rigid bike is paired 1x9 with xt shifter. CRISP shifting.my 2x9 squishy paired with deore shifter is smooth. deore shifter is more forgiving of adjustment. shimano web site has exploded diagram of this. tech tip. can remove P screw from knuckle and turn spring into other hole to get more tension on chain. then its more like xt version of same generation. great unit if you dont need shadow for trails

After installing the Shimano Lx M581 Rear Derailleur,Shimano 7-SPEED Freewheel and the Kmc Z-51 Hg & Ig Compatible Chain to upgrade my wife's old Schwinn World Sport because it had become hard shifting 6 speed clunker...Now she says its feels like and even better 7 speed fun road bike that shifts like butter...just like it did when it was new only better with 7 gears now.

I installed this LX mountain derailleur on my gravel grinding/long distance recreational road bike with an 11-34 cassette, compact crank and down-tube shifters. It works great and it's silver rather than black or silver/black. It's good looking, dependable and inexpensive, what more can I ask?

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Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items